[Retracted] Evaluation of Critical Factors of Postoperative Arrhythmia and Preventive Measures of Deep Venous Thrombosis

Table 1

Logistic regression of risk factors for arrhythmia.

Risk factors	Regression coefficients	Standard error	OR	95% CI	value
Age ≥65 years old	2.825	1.314	2.254	1.035, 5.428	0.009
Abnormal preoperative ECG	1.128	0.517	3.029	0.219, 2.095	0.021
CHD before surgery	1.006	0.428	2.751	0.528, 1.627
COPD before surgery	0.985	0.526	5.857	0.131, 1.825	0.008
Operation time ≥4h	0.829	0.617	4.988	0.122, 1.956	0.007
Preoperative serum potassium <4.0	0.622	0.261	1.484	0.076, 1.083	0.028